<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>Document</title>
    <script src="jquery.min.js"></script>
    <style>
      div {
        position: absolute;
        width: 100px;
        height: 100px;
        background-color: pink;
      }
    </style>
  </head>

  <body>
    <div></div>
    <script>
      // 高阶函数- 函数可以作为参数传递
      function fn(a, b, callback) {
        console.log(a + b)
        callback && callback()
      }

      fn(1, 2, function () {
        console.log("我是最后调用的")
      })

      $("div").animate(
        {
          left: 500,
        },
        function () {
          $("div").css("backgroundColor", "purple")
        }
      )
    </script>
  </body>
</html>
